| // RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -verify %s |
| // RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -fcuda-is-device -verify %s |
| |
| // RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -fcuda-rdc -verify=rdc %s |
| // RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -fcuda-is-device -fcuda-rdc -verify=rdc %s |
| |
| // Most of these declarations are fine in separate compilation mode. |
| |
| #include "Inputs/cuda.h" |
| |
| __device__ void foo() { |
| extern __shared__ int x; // expected-error {{__shared__ variable 'x' cannot be 'extern'}} |
| extern __shared__ int arr[]; // ok |
| extern __shared__ int arr0[0]; // expected-error {{__shared__ variable 'arr0' cannot be 'extern'}} |
| extern __shared__ int arr1[1]; // expected-error {{__shared__ variable 'arr1' cannot be 'extern'}} |
| extern __shared__ int* ptr ; // expected-error {{__shared__ variable 'ptr' cannot be 'extern'}} |
| } |
| |
| __host__ __device__ void bar() { |
| extern __shared__ int arr[]; // ok |
| extern __shared__ int arr0[0]; // expected-error {{__shared__ variable 'arr0' cannot be 'extern'}} |
| extern __shared__ int arr1[1]; // expected-error {{__shared__ variable 'arr1' cannot be 'extern'}} |
| extern __shared__ int* ptr ; // expected-error {{__shared__ variable 'ptr' cannot be 'extern'}} |
| } |
| |
| extern __shared__ int global; // expected-error {{__shared__ variable 'global' cannot be 'extern'}} |
| extern __shared__ int global_arr[]; // ok |
| extern __shared__ int global_arr1[1]; // expected-error {{__shared__ variable 'global_arr1' cannot be 'extern'}} |
| |
| // Check that, iff we're not in rdc mode, extern __shared__ can appear in an |
| // anonymous namespace / in a static function without generating a warning |
| // about a variable with internal linkage but no definition |
| // (-Wundefined-internal). |
| namespace { |
| extern __shared__ int global_arr[]; // rdc-warning {{has internal linkage but is not defined}} |
| __global__ void in_anon_ns() { |
| extern __shared__ int local_arr[]; // rdc-warning {{has internal linkage but is not defined}} |
| |
| // Touch arrays to generate the warning. |
| local_arr[0] = 0; // rdc-note {{used here}} |
| global_arr[0] = 0; // rdc-note {{used here}} |
| } |
| } // namespace |
